Cisco 2911 Configuration Guide

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Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
Chapter Configuring Radio Settings
Enabling and Disabling Gratuitous Probe Response
Enabling and Disabling Gratuitous Probe Response
Gratuitous Probe Response (GPR) aids in conserving battery power in dual mode phones that support
cellular and WLAN modes of operation. GPR is available on 5-Ghz radios and is disabled by default.
You can configure two GPR settings:
• Period—This setting determines the time between GPR transmissions in Kusec intervals from 10 to
255 (similar to the beacon period)
• Speed—The speed is the data rate used to transmit the GPR
Selecting a longer period reduces the amount of RF bandwidth consumed by the GPR with the possibility
of shorter battery life. Selecting higher transmission speeds also reduces the amount of bandwidth
consumed but at the expense of a smaller cell size.
To enable GPR and set its parameters, follow these steps, beginning in privileged EXEC mode.
SUMMARY STEPS
1. configure terminal
2. interface dot11radio {
3. probe-response gratuitous {period | speed}
4. period Kusec
5. speed {[6.0] [9.0] [12.0] [18.0] [24.0] [36.0] [48.0] [54.0]}
6. end
7. copy running-config startup-config
DETAILED STEPS
Step 5
antenna transmit
{diversity | left | right}
Sets the transmit antenna to diversity, left, or right.
Note For best performance with two antennas, leave the
receive antenna setting at the default setting, diversity.
For one antenna, attach the antenna on the right and set
the antenna for right.
Step 6
end Returns to privileged EXEC mode.
Step 7
copy running-config startup-config (Optional) Saves your entries in the configuration file.
Command Purpose
Command Purpose
Step 1
configure terminal Enters global configuration mode.
Step 2
interface dot11radio { Enters interface configuration mode for the 5-GHz radio
interface.
Step 3
probe-response gratuitous
{period | speed}
Enables the Gratuitous Probe Response feature using default
period (10 Kusec) and speed (6.0 Mbps).
Step 4
period Kusec (Optional) Accepts a value from 10 to 255. The default value is
10

Cisco 2911 Specifications

General

Ethernet LAN	Yes
Cabling technology	10/100/1000Base-T(X)
Networking standards	IEEE 802.1Q, IEEE 802.1ag, IEEE 802.3, IEEE 802.3ab, IEEE 802.3af, IEEE 802.3ah, IEEE 802.3u
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet interface type	Gigabit Ethernet
DHCP client	-
Routing protocols	BGP, EIGRP, OSPF
Supported protocols	IPv4, IPv6, IS-IS, IGMPv3, PIM SM, SSM, DVMRP, IPSec, GRE, BVD, MPLS, L2TPv3, PPP, MLPPP, MLFR, HDLC, RS-232, RS-449, X.21, V.35, EIA-530, PPPoE, ATM
USB version	2.0
RS-232 ports	1
Expansion slots	4 x EHWIC 2 x DSP 1 x ISM
USB ports quantity	2
Ethernet LAN (RJ-45) ports	3
Firewall security	Cisco IOS
Input current	2.2 A
AC input voltage	100 - 240 V
Power source type	AC
AC input frequency	47 - 63 Hz
Power consumption (typical)	50 W
Product color	Black
Rack capacity	2U
Operating altitude	0 - 4000 m
Non-operating altitude	0 - 4570 m
Storage temperature (T-T)	-40 - 80 °C
Operating temperature (T-T)	0 - 40 °C
Storage relative humidity (H-H)	5 - 95 %
Operating relative humidity (H-H)	5 - 85 %
Safety	UL 60950-1, CAN/CSA C22.2 No. 60950-1, EN 60950-1, AS/NZS 60950-1, IEC 60950-1
Electromagnetic compatibility	47 CFR, ICES-003, EN55022, CISPR22, AS/NZS 3548, VCCI V-3, EN 300-386, EN 61000, EN 55024, CISPR 24EN50082-1

Weight and Dimensions

Depth	304.8 mm
Width	438.2 mm
Height	88.9 mm
Weight	8200 g